Improvement in bolt-heading machines



LPETERS FHOTO-LITHOGRAPHER. WASHINGTON. D,.C.

YUNITED STATES HENRY E. ANTHONY, OF PROVIDENCE, RHODE ISLAND.

PATENT OEEicE.

IMPROVEMENT IN BOLT-HEADING MACHINES.

Specification forming part of Letters Patent No. 55.597, dated June 19,1866.

To all whom 'it may concern:

Be it known that I, HENRY E. ANTHONY, of Providence, in the county otProvidence and State of Rhode Island, have invented an ImprovedBolt-Heading Machine; and I do hereby declare that the following is at'ull and exact description, reference being had to the accompanyin gdrawings, makin g a part of this speciication.

The nature of my invention consists in conflning the stock from whichthe head of the bolt is to be formed at a point above the headingehamber, so thatit may be upset and spread out equally in alldirections, and also in relieving the pressure from the opposite end ofthe bolt at'ter it is partially headed, in order that any surplusmaterial may be forced out of the heading-chamber into the shank of thebolt, thereby relieving` the machine from the heavy strain caused by itscontinuous motion after the heading-chamber has been entirely filled.

To enable those skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

Figure l represents a perspective view of the machine; Figs. 2 and 3,sectional views; Fig. 4, views of the heading-die.

Fig. 2 represents a vertical section ofthe upper portion ofthe machine.A is the frame, to which are attached the slides B B, which serve toguide the parts which hold the die C and the bolt D in their motions upand down. The screw E carries upon its lower end the square punch F, theconnection bctween the -two being formed by a swiveljoint, so that thescrew may be turned without causing the punch to revolve. This screwserves to adjust the punch to the proper height. The lowerl end of thispunch enters the upper square chamber, c, of the headingdie G, variousviews of which are also shown in Fig. et. This die is secured to thesliding die-holder G by the screw H. (Shown in Fig. 1.)

The vertical range of the die-holder is controlled and regulated by thebolts I Iand screwthimbles J J The bolt D, which is to be headed,is heldin the hand-tool K, a projection of which enters a cavity in the upperend of the tube L, which is screwed into the sliding piece M. The pieceM slides in the frame N, to which motion is imparted by the crank O andconnecting-rod P. (Shown in Fig. 1.)

The screw Q (shown in Figs.l and 3) is used to adjust the motion of thesliding piece M to a point which will bring the bolt, when inserted inthe hand-tool, exactly under the die C.

Upon the lower part of the tube L is placed the thimble lt, with ascrew, S, at its lower end. Small holes r r are also made, through whichdirt is allowed to escape. This thimble has two projections, U U, uponits opposite sides, which rest upon the lever V, which is hung at thepoint fv and raised and lowered by the cam W, which is operated by thearm X and pin Y moving in the groove Z. (Shown in Fig. l.)

T is a short plug resting upon the screw S, and is used in `connectionwith the screw to gage the length ofthe bolt by filling up the hole inwhich it is placed, plugs of dii'ercnt lengths being provided for thatpurpose. This plug is furnished with one or more grooves to allow thedirt to fall into the chamber which contains the upper end of the screwS, and thence through the holes r r.

The cap n, which is fastened to the frame N, serves to hold the tool Kby slipping over the lip le when the sliding piece M is placed incontact with the screw Q. The piece M slides back far enough to allow ared hot bolt to be inserted in the tool K. It is then to be forced up incontact with the screw Q, which brings the bolt D exactly under the dieC. Now, the crank O being set in motion, the lower sliding frame, N,with all the attached parts, are raised,carrying the upper end ot thebolt D into the upper square chamber, c, of the die O,when the uppersurface of the handtool will bring up against the lowerI end otl thedie, thereby completely closing the headingchamber c. Now, as the upwardmotion of the lower frame continues, carrying with it the die C and itsholder Gr, the upper end ofthe bolt is forced, by the stationary punchF,into the heading-chamber c', at the same time being supported by thesides of the chamber c. Now, when the head is nearly formed the pin Y ofthe arm K reaches vthe curved portion of the groove Z, causing the armand cam to be turned outward, thereby lowering the outer end of thelever V. The thimble E, which supports the pin T, moves with it, leavingthe lower end ofthe bolt entirely free, so that the pressure caused bythe upward motion of the frame N is now exerted upon the under side ofthe head,tending to fill out the corners and to force any surplus stockdown through the heading chamber into the shank of the bolt. As thecrank continues to turn the frame N falls away from the die, when theheaded bolt is removed from the machine by means of the hand-toolK. Inthis manner bolts can be made.

with the die or collar Which contines the bolt at a point above theheading chamber, substantially as described.

2. Removing the thimhle R and pin T, or any other equivalent devicewhich may be used to support or confine the lower end ofthe bolt aftersuch bolt has been partially headed, in order to allow any surplus stockto be forced from the upper chamber down through the head ot' the bolt,substantially as described.

3. The sliding die-holder G, operating' substantially in the mannerdescribed.

4. The combination of screw E and swivelpunch F, operating substantiallyas described.

5. The manner of securing,` the hand-tool by the cap u, substantially asdescribed.

HENRY E. ANTHONY.

Witnesses:

SOCRATES ScHoLFIELD, FREDK. H. ANTHONY.

